RT @USGS: [PUB] – ‘Classic’ USGS Publication - Guidebook of the Western United States: Part F - The Southern Pacific lines, New Orleans to…
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RT @USGS: [PUB] – ‘Classic’ USGS Publication - Guidebook of the Western United States: Part F - The Southern Pacific lines, New Orleans to…
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[PUB] – ‘Classic’ USGS Publication - Guidebook of the Western United States: Part F - The Southern Pacific lines, New Orleans to Los Angeles (1933) https://t.co/zndoFIYH2S #geology #guidebook https://t.co/takpKCrabm
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RT @USGS: [PUB] – ‘Classic’ USGS Publication - Guidebook of the Western United States: Part F - The Southern Pacific lines, New Orleans to…